Motor-driven machines, in particular for punching paper or the like

ABSTRACT

A paper-cutting machine for punching out labels, envelopes and the like in which more than one cutting operation can be carried at one time including: a hydraulically driven slide guided on vertical guide members between a bottom plate and a top plate, and cutting blade arranged between the plates for cutting the paper as desired, the paper then deposited on the top plate where it is removed by an ejector mechanism.

United States Patent I I UN 1 Inventor v Walter Schmidt KarLsbei-gallee3L I000 Berlin 22, Germany Appl. N6v 784,349 Filed Dec. 17, I968Patented June 29, 1971 Priority Dec. 19, I967 Germany I I5 61 514.1

MOTOR-DRIVEN MACHINES, IN PARTICULAR FOR PUNCI-IING PAPER OR THE LIKE 5Claims, 5 Drawing Figs.

us. Cl 83/90, 83/569 Int. Cl 826d 7/06 Field of Search 83/90. 566, 569

[56] References Cited UNITED STATES PATENTS 3,290,977 12/1966 Brestel cta] 6. 83/566 X 3,314,323 4/1967 Busch et a1. 83/569 FOREIGN PATENTS838,740 5/1952 Germany 83/90 Primary ExaminerWilliam S. LawsonAtt0rneyWatson, Cole, Grindle & Watson ABSTRACT: A paper-cutting machinefor punching out labels, envelopes and the like in which more than onecutting operation can be carried at one time including: a hydraulicallydriven slide guided on vertical guide members between a bottom plate anda top plate, and cutting blade arranged between the plates for cuttingthe paper as desired, the paper then deposited on the top plate where itis removed by an ejector mechanism.

PATENTEH JUN29 IBII 3. 5 9,223

sum 2 or a /N VENT 0R 1 Wa/fer- SCHMIDT MOTOR-DRIVEN MACHINES. INPARTICULAR FOR PUNCHING PAPER OR THE LIKE The present invention relatesto motor-driven paper-cutting machines for cutting items as labels.envelopes and the likev A disadvantage of known machines of this type isthat only one cutting operation can be carried out at one time. Anobject of the present invention is to carry out more than one cuttingoperation at one time. A machine for carrying out the invention mayhandle a maximum format of 450 340 mm. in order to make it possible tocut out two or four blanks when dealing with smaller formats. Inpractice, it has been found that when cutting smaller labels, as many aseight blanks can be produced in one stroke of the cutter.

The invention consists in a paper-cutting machine comprising a pair ofspaced-apart plates, guide members disposed between the plates, a slidefor supporting paper mounted for movement between the plates along theguide members,

, cutting blades disposed between the plates an ejector mechanismmounted on one of the plates whereby .upon movement of the slide fromthe said other of the plates to the said one of the plates, paper isbrought into contact with the cutting blades, cut and then is removed bythe ejector mechanism.

Preferably, the slide includes a plurality of longitudinal and lateralcutouts, and a plurality of stop members disposed on the said one of theplates and cooperating with the cutouts for guiding paper supported onthe slide.

Preferably, clamping dogs are provided on the said one of the plates foradjustably positioning the cutting blades, and include locating pins forsupporting the clamping dogs from the i said one of the plates.

Preferably, the ejector mechanism includes a pusher member mounted forreciprocation on the said one of the plates, a toothed rack connected tothe pusher member adapted to be driven by a motor, and an adjustablymounted switch actuator disposed on the toothed rack for actuating aswitch. i

In known machines of this type an average of 100,000 labels per hour canbe cut out, in comparison to the instant device wherein somewherebetween 40,000 and 800,000 labels per hour can be produced.

An embodiment of the invention will now be described with reference tothe accompanying drawings wherein:

FIG. 1 is an overall side elevation of a paper-cutting machine accordingto the invention;

FIG. 2 is a plan view ofa slide;

FIG. 3 is an inverted section of the slide shown in FIG. 2;

FIG. is a side elevation of a clamping dog turned through 90"; and FIG.Sis a plan view of the clamping dog of FIG. 4.

The paper-cutting machine according to the invention includes a subframe1 with a bottom plate 3 secured thereto.

Four vertical guide members are mounted on the bottom plate 3. A topplate 4 is disposed on the top of vertical guide members 5. A slide isdisposed between the members 5 for vertical movement thereon. The slideincludes bearing 36 located at the corners thereof for cooperation withthe members 5. As shown in FIG. 2, the slide has a plurality oflateraland longitudinal cutouts or slots 37. Adjustable stop members 7 areadjustably secured to the bottom plate 3 and arranged to cooperate withthe cutouts 37 to thereby guide the stack of paper which is to be cut.The upward and downward vertical movement of the slide 2 is effected bya hydraulic system 6 including a cylinder and piston unit. The hydraulicsystem 6, in particular the cylinder, as shown in FIG. I, is secured tothe bottom plate 3. The piston on the other hand is secured to the slide2 by means ofa threaded sleeve 38 as shown in FIG. 3.

Cutting blades 16 are fixedly arranged on the top plate 4 and inresponse to the upward movement of the slide 2 carrying a stack of papercut the labels according to predetermined sizes. The cutting blades 16are adjustably secured to the top plate 4 by means of clamping dogs 11.The clamping dogs 11 are secured to the top plate 4 by locating pins 39,through the medium of bearing blocks 40, and guided by clamp rails 41.

- Clamping screws 42 secure the clamping dogs 11 in the rails 41 bypinching a threaded section of the dog which contains a slot 43 which inturn locks the threaded spindle 44 and therefore the clamping dog 11 inthe desired position. By releasing the clamping screw 42, the threadedspindle maybe rotated at its adjusting end 12 which in turn adjusts thedog 11 and the blade secured thereto.

After the material has been cut, it is ejected from the machine by anejector mechanism disposed on the top plate 4. This ejector mechanismincludes a pusher member 33, a toothed rack 32 driven by a motor 31 andconnected to the pusher member 33. An adjustably mounted switch actuator35 is arranged on the toothed rack 32 and is adapted to actuate theswitch 34 so mounted on the top plate 4.

Paper-guiding elements 8 are provided on the top plate 4 for guiding thecut labels or the like in ordered fashion when the labels are beingejected by the pusher member 33 onto a conveyor 9. The position of theguiding elements may be adjusted in response to the sizes oflabels whichare cut.

In addition to a hydraulic system 6 housed in the subframe 1 is areservoir 27 containing hydraulic: fluid for the hydraulic system 6. Adrive motor 20 with a clutch 21 is secured to the subframe l. Thesubframe 1, which is formed as a cylinder, is provided with a door 19which carries an electrical control panel 18 with a switch lever 23. Inaddition, an oil level indicator 26, a pressure gauge 24 or similarfittings may be located on the subframe I.

I claim:

1. A paper-cutting machine comprising a pair of spacedapart plates,guide members disposed between the plates, a slide for supporting papermounted for movement between the plates along the guide members, cuttingblades disposed between the plates, an ejector mechanism mounted on oneof the plates whereby upon movement of the slide from the said other ofthe plates to the said one of the plates, paper is brought into contactwith the cutting blades, cut and then is removed by the ejectormechanism, the slide including a plurality oflongitudinal and lateralcutouts, and a plurality of stop members are disposed on the said one ofthe plates and are operable with the cutouts for guiding paper supportedon the slide, and clamping dogs provided on the said one of the plates,for adjustably positioning the cutting blades and the clamping dogsinclude locating pins for supporting the clamping dogs from the said oneof the plates, threaded members connected to clamping dogs, means foradjusting the cutting blades, clamp rails arranged for guiding theclamping dogs, and slot and screw means on the clamping dogs for lockingthe latter in position and releasing the clamping dogs to permitrotation of the thread members.

2. A paper-cutting machine comprising a pair of spacedapart plates,guide members disposed between the plates, a slide for supporting papermounted for movement between the plates along the guide members, cuttingblades disposed between the plates, an ejector mechanism mounted on oneof the plates whereby upon movement of the slide from the said other ofthe plates to the said one of the plates, paper is brought into contactwith the cutting blades, cut and then is removed by the ejectormechanism, the slide including a plurality of longitudinal and lateralcutouts, and a plurality of stop members are disposed on the said one ofthe plates and are operable with the cutouts for guiding paper supportedon the slide and guiding elements provided on the said one of the platesfor guiding the cut paper during ejection by the ejector mechanism.

3. A paper-cutting machine as claimed in claim 2, wherein the ejectormechanism includes a pusher member mounted for reciprocation on the saidone of the plates, a toothed rack connected to the pusher member adaptedto be driven by a motor, and an adjustably mounted switch actuatordisposed on the toothed rack for actuating a switch.

4. A paper-cutting machine as claimed in claim 3, wherein the one of theplates is disposed below the other of the plates and the slide isvertically movable.

5. A paper-cutting machine as claimed in claim 4, wherein the slide ishydraulically driven by a cylinder and piston unit disposed in asubframe located beneath the bottom plate.

1. A paper-cutting machine comprising a pair of spaced-apart plates,guide members disposed between the plates, a slide for supporting papermounted for movement between the plates along the guide members, cuttingblades disposed between the plates, an ejector mechanism mounted on oneof the plates whereby upon movement of the slide from the said other ofthe plates to the said one of the plates, paper is brought into contactwith the cutting blades, cut and then is removed by the ejectormechanism, the slide including a plurality of longitudinal and lateralcutouts, and a plurality of stop members are disposed on the said one ofthe plates and are operable with the cutouts for guiding paper supportedon the slide, and clamping dogs provided on the said one of the plates,for adjustably positioning the cutting blades and the clamping dogsinclude locating pins for supporting the clamping dogs from the said oneof the plates, threaded members connected to clamping dogs, means foradjusting the cutting blades, clamp rails arranged for guiding theclamping dogs, and slot and screw means on the clamping dogs for lockingthe latter in position and releasing the clamping dogs to permitrotation of the thread members.
 2. A paper-cutting machine comprising apair of spaced-apart plates, guide members disposed between the plates,a slide for supporting paper mounted for movement between the platesalong the guide members, cutting blades disposed betweEn the plates, anejector mechanism mounted on one of the plates whereby upon movement ofthe slide from the said other of the plates to the said one of theplates, paper is brought into contact with the cutting blades, cut andthen is removed by the ejector mechanism, the slide including aplurality of longitudinal and lateral cutouts, and a plurality of stopmembers are disposed on the said one of the plates and are operable withthe cutouts for guiding paper supported on the slide and guidingelements provided on the said one of the plates for guiding the cutpaper during ejection by the ejector mechanism.
 3. A paper-cuttingmachine as claimed in claim 2, wherein the ejector mechanism includes apusher member mounted for reciprocation on the said one of the plates, atoothed rack connected to the pusher member adapted to be driven by amotor, and an adjustably mounted switch actuator disposed on the toothedrack for actuating a switch.
 4. A paper-cutting machine as claimed inclaim 3, wherein the one of the plates is disposed below the other ofthe plates and the slide is vertically movable.
 5. A paper-cuttingmachine as claimed in claim 4, wherein the slide is hydraulically drivenby a cylinder and piston unit disposed in a subframe located beneath thebottom plate.
 2. A paper-cutting machine comprising a pair ofspaced-apart plates, guide members disposed between the plates, a slidefor supporting paper mounted for movement between the plates along theguide members, cutting blades disposed betweEn the plates, an ejectormechanism mounted on one of the plates whereby upon movement of theslide from the said other of the plates to the said one of the plates,paper is brought into contact with the cutting blades, cut and then isremoved by the ejector mechanism, the slide including a plurality oflongitudinal and lateral cutouts, and a plurality of stop members aredisposed on the said one of the plates and are operable with the cutoutsfor guiding paper supported on the slide and guiding elements providedon the said one of the plates for guiding the cut paper during ejectionby the ejector mechanism.
 3. A paper-cutting machine as claimed in claim2, wherein the ejector mechanism includes a pusher member mounted forreciprocation on the said one of the plates, a toothed rack connected tothe pusher member adapted to be driven by a motor, and an adjustablymounted switch actuator disposed on the toothed rack for actuating aswitch.
 4. A paper-cutting machine as claimed in claim 3, wherein theone of the plates is disposed below the other of the plates and theslide is vertically movable.
 5. A paper-cutting machine as claimed inclaim 4, wherein the slide is hydraulically driven by a cylinder andpiston unit disposed in a subframe located beneath the bottom plate.